head to head · open source
Windmill vs Automatisch
Windmill has 18,360 GitHub stars, 1,136 forks, 852 open issues and last shipped yesterday. Automatisch has 14,007 stars, 1,061 forks, 287 open issues and last shipped 9 months ago. Windmill leads on adoption by 31% (18,360 vs 14,007 stars). Windmill is written in Rust under a custom or non-standard licence; Automatisch is written in JavaScript under a custom or non-standard licence. Windmill has attracted 6% as many forks as stars, Automatisch 8%. Windmill was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (open-source, self-hosted), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Windmill | Automatisch | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 14K |
| License | Custom / other | Custom / other |
| Written in | Rust | JavaScript |
| Last push | 2026-11-02 | 2026-02-11 |
| Forks | ⑂ 1.1K | ⑂ 1.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Windmill if
- You weight community size — 18K stars and counting
- You want the Custom / other license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick Automatisch if
- You want the Automatisch feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches JavaScript
- You evaluated both and Automatisch fits your workflow better
About Windmill
Open source developer platform for internal code: APIs, background jobs, workflows and UIs. Self hostable alternative to Retool, Pipedream, Superblocks and a simplified Temporal with autogenerated UIs and custom UIs to trigger workflows and scripts as internal apps. Scripts are turned into sharable UIs automatically, and can be composed together into flows or used into richer apps built with low code. Supported languages: Python, TypeScript, Go, Bash, SQL, GraphQL, PowerShell, Rust, and more. Try it Website Docs Discord Hub Contributing Windmill Developer platform for APIs, background jobs, workflows and UIs…
read the full Windmill overview →
About Automatisch
Automatisch Open Source Zapier Alternative 🧐 Automatisch is a business automation tool that lets you connect different services like Twitter, Slack, and more to automate your business processes. 💸 Automating your workflows doesn't have to be a difficult or expensive process. You also don't need any programming knowledge to use Automatisch. Advantages There are other existing solutions in the market, like Zapier and Integromat, so you might be wondering why you should use Automatisch. ✅ One of the main benefits of using Automatisch is that it allows you to store your data on your own servers, which is essential…
read the full Automatisch overview →
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Frequently asked questions
Is Windmill or Automatisch more popular?
Windmill has 18,360 GitHub stars and Automatisch has 14,007. Windmill has the larger community by that measure.
Are Windmill and Automatisch free?
Neither Windmill nor Automatisch declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between Windmill and Automatisch?
Windmill is written in Rust and Automatisch in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Windmill or Automatisch?
Choose Windmill if you want the larger community (18,360 stars) or its Custom / other licence terms. Choose Automatisch if its feature set, stack or Custom / other licence fits better. Both are self-hostable.